Turricostellaria jukyry, Simone & Cunha, 2012
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publication ID |
https://doi.org/ 10.5252/z2012n4a6 |
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publication LSID |
lsid:zoobank.org:pub:857CAD31-66E1-4CEE-AB4D-CCD64541D0EF |
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DOI |
https://doi.org/10.5281/zenodo.5173227 |
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persistent identifier |
https://treatment.plazi.org/id/03AA8317-C646-0D59-FC81-9BADCE890F02 |
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treatment provided by |
Felipe |
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scientific name |
Turricostellaria jukyry |
| status |
sp. nov. |
Turricostellaria jukyry View in CoL n. sp.
( Fig. 5 View FIG G-K)
TYPE MATERIAL. — Holotype: Brazil, Espírito Santo, off Itaúnas, continental slope of Abrolhos, 19°01’S, 37°47’W, 1500-1575 m depth, MNHN 25232 ( Fig. 5 View FIG G-J) ( MD 55, stn CB 79, Bouchet, Leal & Métivier coll., 28. V.1987). Paratype: off Regência, 19°40’S, 37°48’W, 790-940 m depth, MZSP 102858, 1 shell ( Fig. 5K View FIG ) (stn CB 77, 27. V.1987).
TYPE LOCALITY. — Brazil, Espírito Santo, off Itaúnas, continental slope of Abrolhos, 19°01’S, 37°47’W, 1500- 1575 m depth ( MD 55, stn CB 79).
ETYMOLOGY. — The specific epithet is derived from the word “jukyry” in the native Parintintin language, meaning pale yellow ( Betts 1981).
DISTRIBUTION. — Off Espírito Santo, Abrolhos continental slope.
DIAGNOSIS. — Shell up to 13 mm, elongated (length c. 3 times width). Sculpture axial, sparse, low; shoulder low, away from upper suture. Protoconch pointed, of four whorls. Aperture c. ⅓ shell length.
DESCRIPTION
Shell: size up to 12.3 mm, outline somewhat turriform; width c. 39% of length. Colour white, in tip or spire and anterior half of body whorl, pale yellow in middle, with no clear limit between pigmentations ( Fig. 5G, H, K View FIG ); surface shining. Protoconch pointed and tall, colour pale brown, comprising c. 8% of shell length and c. 12% of shell width; about four rounded, smooth, glossy whorls; suture shallow but clear ( Fig. 5I View FIG ); transition with teleoconch clear, arched. Spire c. 65% of shell length; spire angle c. 35°.Teleoconch up to 6.5 whorls; each whorl with wide shoulder located between upper and middle thirds of each whorl, in angle c. 35° in relation to longitudinal shell axis; remaining weakly convex, almost vertical. Sculpture strong axial threads, vertical, from suture to suture, with small node on tip of shoulder; c. 9 in penultimate whorl; interspaces of axial threads roundly concave, with c. 3 times threads width. Anterior region of body whorl lacking spiral threads ( Fig. 5G, H, K View FIG ), axial threads disappearing gradually producing smooth, uniform surface. Aperture elliptic, weakly oblique; comprising c. 43% of shell length and c. 35% of shell width. Outer lip simple, rounded, lacking folds. Inner lip weakly concave, with shallow callus, upper third c. 45° in relation to longitudinal shell axis; four oblique folds uniformly distributed in middle region, comprising c. 60% of inner lip area; upper folds larger, diminishing up to inconspicuous fourth fold flanking canal ( Fig. 5H, J View FIG ). Canal narrow, somewhat pointed, weakly projected forwards; with c. ½ of aperture width. No umbilicus.
MEASUREMENTS (in mm). — Holotype: 12.3 × 5.0; paratype: 7.8 × 3.4.
HABITAT. — Sandy-mud bottoms, 790-1575 m depth.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.